+static int dip_hostaddr(adns_state ads,
+ const adns_rr_hostaddr *ap, const adns_rr_hostaddr *bp) {
+ if (ap->astatus != bp->astatus) return ap->astatus;
+ if (ap->astatus) return 0;
+
+ assert(ap->addrs[0].addr.sa.sa_family == AF_INET);
+ assert(bp->addrs[0].addr.sa.sa_family == AF_INET);
+ return dip_inaddr(ads,
+ ap->addrs[0].addr.inet.sin_addr,
+ bp->addrs[0].addr.inet.sin_addr);
+}
+
+static int di_hostaddr(adns_state ads,
+ const void *datap_a, const void *datap_b) {
+ const adns_rr_hostaddr *ap= datap_a, *bp= datap_b;
+
+ return dip_hostaddr(ads, ap,bp);
+}
+
+static void mfp_hostaddr(adns_query qu, adns_rr_hostaddr *rrp) {
+ void *tablev;
+
+ adns__makefinal_str(qu,&rrp->host);
+ tablev= rrp->addrs;
+ adns__makefinal_block(qu, &tablev, rrp->naddrs*sizeof(*rrp->addrs));
+ rrp->addrs= tablev;
+}
+
+static void mf_hostaddr(adns_query qu, void *datap) {
+ adns_rr_hostaddr *rrp= datap;
+
+ mfp_hostaddr(qu,rrp);
+}
+
+static adns_status csp_hostaddr(vbuf *vb, const adns_rr_hostaddr *rrp) {
+ const char *errstr;
+ adns_status st;
+ char buf[20];
+ int i;
+
+ st= csp_domain(vb,rrp->host); if (st) return st;
+
+ CSP_ADDSTR(" ");
+ CSP_ADDSTR(adns_errtypeabbrev(rrp->astatus));
+
+ sprintf(buf," %d ",rrp->astatus);
+ CSP_ADDSTR(buf);
+
+ CSP_ADDSTR(adns_errabbrev(rrp->astatus));
+ CSP_ADDSTR(" ");
+
+ errstr= adns_strerror(rrp->astatus);
+ st= csp_qstring(vb,errstr,strlen(errstr)); if (st) return st;
+
+ if (rrp->naddrs >= 0) {
+ CSP_ADDSTR(" (");
+ for (i=0; i<rrp->naddrs; i++) {
+ CSP_ADDSTR(" ");
+ st= csp_addr(vb,&rrp->addrs[i]);
+ }
+ CSP_ADDSTR(" )");
+ } else {
+ CSP_ADDSTR(" ?");
+ }
+ return adns_s_ok;
+}
+
+static adns_status cs_hostaddr(vbuf *vb, const void *datap) {
+ const adns_rr_hostaddr *rrp= datap;
+
+ return csp_hostaddr(vb,rrp);
+}
+
+/*
+ * _mx_raw (pa,di)
+ */
+
+static adns_status pa_mx_raw(const parseinfo *pai, int cbyte,
+ int max, void *datap) {
+ const byte *dgram= pai->dgram;
+ adns_rr_intstr *rrp= datap;
+ adns_status st;
+ int pref;
+
+ if (cbyte+2 > max) return adns_s_invaliddata;
+ GET_W(cbyte,pref);
+ rrp->i= pref;
+ st= pap_domain(pai, &cbyte, max, &rrp->str,
+ pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
+ if (st) return st;
+
+ if (cbyte != max) return adns_s_invaliddata;
+ return adns_s_ok;
+}
+
+static int di_mx_raw(adns_state ads, const void *datap_a, const void *datap_b) {
+ const adns_rr_intstr *ap= datap_a, *bp= datap_b;
+
+ if (ap->i < bp->i) return 0;
+ if (ap->i > bp->i) return 1;
+ return 0;
+}
+
+/*
+ * _mx (pa,di)
+ */
+
+static adns_status pa_mx(const parseinfo *pai, int cbyte,
+ int max, void *datap) {
+ const byte *dgram= pai->dgram;
+ adns_rr_inthostaddr *rrp= datap;
+ adns_status st;
+ int pref;
+
+ if (cbyte+2 > max) return adns_s_invaliddata;
+ GET_W(cbyte,pref);
+ rrp->i= pref;
+ st= pap_hostaddr(pai, &cbyte, max, &rrp->ha);
+ if (st) return st;
+
+ if (cbyte != max) return adns_s_invaliddata;
+ return adns_s_ok;
+}
+
+static int di_mx(adns_state ads, const void *datap_a, const void *datap_b) {
+ const adns_rr_inthostaddr *ap= datap_a, *bp= datap_b;
+
+ if (ap->i < bp->i) return 0;
+ if (ap->i > bp->i) return 1;
+ return dip_hostaddr(ads, &ap->ha, &bp->ha);
+}
+
+/*
+ * _inthostaddr (mf,cs)
+ */
+
+static void mf_inthostaddr(adns_query qu, void *datap) {
+ adns_rr_inthostaddr *rrp= datap;
+
+ mfp_hostaddr(qu,&rrp->ha);
+}
+
+static adns_status cs_inthostaddr(vbuf *vb, const void *datap) {
+ const adns_rr_inthostaddr *rrp= datap;
+ char buf[10];
+
+ sprintf(buf,"%u ",rrp->i);
+ CSP_ADDSTR(buf);
+
+ return csp_hostaddr(vb,&rrp->ha);
+}
+
+/*
+ * _inthost (cs)
+ */
+
+static adns_status cs_inthost(vbuf *vb, const void *datap) {
+ const adns_rr_intstr *rrp= datap;
+ char buf[10];
+
+ sprintf(buf,"%u ",rrp->i);
+ CSP_ADDSTR(buf);
+ return csp_domain(vb,rrp->str);
+}
+
+/*
+ * _ptr (pa, +icb_ptr)
+ */
+
+static void icb_ptr(adns_query parent, adns_query child) {
+ adns_answer *cans= child->answer;
+ const adns_rr_addr *queried, *found;
+ adns_state ads= parent->ads;
+ int i;
+
+ if (cans->status == adns_s_nxdomain || cans->status == adns_s_nodata) {
+ adns__query_fail(parent,adns_s_inconsistent);
+ return;
+ } else if (cans->status) {
+ adns__query_fail(parent,cans->status);
+ return;
+ }
+
+ queried= &parent->ctx.info.ptr_parent_addr;
+ for (i=0, found=cans->rrs.addr; i<cans->nrrs; i++, found++) {
+ if (queried->len == found->len &&
+ !memcmp(&queried->addr,&found->addr,queried->len)) {
+ if (!parent->children.head) {
+ adns__query_done(parent);
+ return;
+ } else {
+ LIST_LINK_TAIL(ads->childw,parent);
+ return;
+ }
+ }
+ }
+
+ adns__query_fail(parent,adns_s_inconsistent);
+}
+
+static adns_status pa_ptr(const parseinfo *pai, int dmstart,
+ int max, void *datap) {
+ static const char *(expectdomain[])= { DNS_INADDR_ARPA };
+
+ char **rrp= datap;
+ adns_status st;
+ adns_rr_addr *ap;
+ findlabel_state fls;
+ char *ep;
+ byte ipv[4];
+ char labbuf[4];
+ int cbyte, i, lablen, labstart, l, id;
+ adns_query nqu;
+ qcontext ctx;
+
+ cbyte= dmstart;
+ st= pap_domain(pai, &cbyte, max, rrp,
+ pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
+ if (st) return st;
+ if (cbyte != max) return adns_s_invaliddata;
+
+ ap= &pai->qu->ctx.info.ptr_parent_addr;
+ if (!ap->len) {
+ adns__findlabel_start(&fls, pai->ads, -1, pai->qu,
+ pai->qu->query_dgram, pai->qu->query_dglen,
+ pai->qu->query_dglen, DNS_HDRSIZE, 0);
+ for (i=0; i<4; i++) {
+ st= adns__findlabel_next(&fls,&lablen,&labstart); assert(!st);
+ if (lablen<=0 || lablen>3) return adns_s_querydomainwrong;
+ memcpy(labbuf, pai->qu->query_dgram + labstart, lablen);
+ labbuf[lablen]= 0;
+ ipv[3-i]= strtoul(labbuf,&ep,10);
+ if (*ep) return adns_s_querydomainwrong;
+ if (lablen>1 && pai->qu->query_dgram[labstart]=='0')
+ return adns_s_querydomainwrong;
+ }
+ for (i=0; i<sizeof(expectdomain)/sizeof(*expectdomain); i++) {
+ st= adns__findlabel_next(&fls,&lablen,&labstart); assert(!st);
+ l= strlen(expectdomain[i]);
+ if (lablen != l ||
+ memcmp(pai->qu->query_dgram + labstart, expectdomain[i], l))
+ return adns_s_querydomainwrong;
+ }
+ st= adns__findlabel_next(&fls,&lablen,0); assert(!st);
+ if (lablen) return adns_s_querydomainwrong;
+
+ ap->len= sizeof(struct sockaddr_in);
+ memset(&ap->addr,0,sizeof(ap->addr.inet));
+ ap->addr.inet.sin_family= AF_INET;
+ ap->addr.inet.sin_addr.s_addr=
+ htonl((ipv[0]<<24) | (ipv[1]<<16) | (ipv[2]<<8) | (ipv[3]));
+ }
+
+ st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id,
+ pai->dgram, pai->dglen, dmstart,
+ adns_r_addr, adns_qf_quoteok_query);
+ if (st) return st;
+
+ ctx.ext= 0;
+ ctx.callback= icb_ptr;
+ memset(&ctx.info,0,sizeof(ctx.info));
+ st= adns__internal_submit(pai->ads, &nqu, adns__findtype(adns_r_addr),
+ &pai->qu->vb, id,
+ adns_qf_quoteok_query, pai->now, &ctx);
+ if (st) return st;
+
+ nqu->parent= pai->qu;
+ LIST_LINK_TAIL_PART(pai->qu->children,nqu,siblings.);
+ return adns_s_ok;
+}
+
+/*
+ * _strpair (mf)
+ */
+
+static void mf_strpair(adns_query qu, void *datap) {
+ adns_rr_strpair *rrp= datap;
+
+ adns__makefinal_str(qu,&rrp->array[0]);
+ adns__makefinal_str(qu,&rrp->array[1]);
+}
+
+/*
+ * _intstrpair (mf)
+ */
+
+static void mf_intstrpair(adns_query qu, void *datap) {
+ adns_rr_intstrpair *rrp= datap;
+
+ adns__makefinal_str(qu,&rrp->array[0].str);
+ adns__makefinal_str(qu,&rrp->array[1].str);
+}
+
+/*
+ * _hinfo (pa)
+ */
+
+static adns_status pa_hinfo(const parseinfo *pai, int cbyte,
+ int max, void *datap) {
+ adns_rr_intstrpair *rrp= datap;
+ adns_status st;
+ int i;
+
+ for (i=0; i<2; i++) {
+ st= pap_qstring(pai, &cbyte, max, &rrp->array[i].i, &rrp->array[i].str);
+ if (st) return st;
+ }
+
+ if (cbyte != max) return adns_s_invaliddata;
+
+ return adns_s_ok;